baber/WOPTO huggingface dataset:
Patent GB-617121-A (GB)
Title: Improvements in distributing and cut-off valves for motor car brakes
IPC: B60T11/28
Filed: 1946-08-16
Abstract: 617,121. Valve accessories. BOHR, G. E. Aug. 16, 1.946, No. 24434. [Class 135] [Also in Group XXXIV] A rotary cut-off valve, having conduits 3, 4 and 5 leading respectively to both front wheel brakes and the left- and right-hand rear wheel brakes is inserted after the master cylinder 2 of an automobile fluid-pressure braking system in order to provide differential operation of the individual wheel brakes. The rotary valve, which in Fig. 1 is of cylindrical form, is held, after rotation by hand lever 10, in any of the selected positions S, P or R by the friction between the end wall 7 and the end face of the valve, when this is under the action of the braking pressure, and is returned automatically to its normal non-restricting position by the combined torsion and compression spring 9 when the brakes are released. In a modified form of valve, Fig. 4, the valve and its seat are of frusto-conical shape and the outlet passages 22 are drilled through the inclined faces which also provide the necessary friction locking effect.
Patent GB-434998-A (GB)
Title: Improved receiver of electrical currents for remote control
IPC: H02J13/00
Filed: 1934-08-24
Abstract: 434,998. Electric selective signalling and remote-control systems. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A' GAZ, 12, Place des Etats-Unis, Montrouge, France. Aug. 24, 1934, No. 24472. Convention date, Sept. 7, 1933. [Class 40 (i)] In an electric signalling and remote control system selection is effected by the time an alternating current impulse is connected to the signalling circuit, the impulse initiating movement of a motor which drives a selector into the next position reached after the impulse stops. The signalling may be over power circuits. As shown, when a pulse of the frequency to which condenser 26 and relay 22 is tuned is received, armature 23 is attracted and motor 10 starts up. The selector shaft is rotated, cam 11 closing contacts 17, 18 to maintain the motor circuit. When the selector wiper 3 reaches contact 5 notch 13 in cam 11 opens contacts 17 18 and unless relay 22 is still energized, the motor stops. If however the signalling frequency is still being received, contacts 20, 21 are still closed and the motor continues to move, the apparatus stopping when contacts 17, 18 are next opened by cam 11 after relay 22 has de-energized. The notches are arranged over less than half the surface of cam 11 so that a pulse of such a length that the cam is rotated through 180‹ restores all selectors to normal irrespective of the starting position. In other embodiments the signalling frequencies operate (i) a tuned relay which steps one of the planetary pinions of a differential gear, the satelite controlling a contact mechanism and the second planetary being driven by the motor and (ii) a tuned oscillating member which, when oscillated, is held by a relay whilst the motor is started, the holding relay being controlled by a cam similar to cam 11 but staggered with respect to the motor control cam. With this arrangement the relay releases the oscillating member before the selector reaches each stopping position, so that, if the signal is still being received, the oscillating member again responds and is again locked whilst the selector is moved through another step.
Patent GB-716535-A (GB)
Title: Improvements in or relating to polysiloxanes
IPC: C08G77/50
Filed: 1952-09-30
Abstract: Polysiloxanes having units of the general formula -(CH3)2Si (CH2)nCO(CH2)nSi(CH3)2O-, where n = 2 to 5, may be made by cleaving the R1 group from silicon in ketones of the formula [R1 (CH3)2Si(CH2)n]2 CO, where R1 is methyl or phenyl (prepared according to Specification 709,689, [Group IV (b)], by reaction with sulphuric acid and hydrolyzing the resulting sulphate with water. Homo-polymers are obtained by the treatment of single ketones and co-polymers are obtained either by the treatment of two or more of the ketones or by interacting at least 0.001 mol per cent. of the ketosiloxanes with conventional polysiloxanes, e.g. in the presence of known catalysts.  The ketopolysiloxanes may be depolymerized by heating to above 350 DEG C. under reduced pressure or at 250 DEG C. in the presence of acidic catalysts.  In examples (1) [(CH3)3 Si(CH2)2]2 CO was reacted with conc. H2SO4, hydrolyzed with water, and the resulting polymers extracted with ether.  The extract was freed from ether, dried and distilled in a stream of nitrogen to yield a residue of a viscous polymer having a unit formula -(CH3)2Si(CH2)2 CO(CH2)2 Si (CH3)2O-, and a distillate, which on redistillation under reduced pressure, gave an oily mixture of polymers of the same unit formula; (2) similar reaction of [(CH3)2 Si(CH2)2], CO with conc. H2SO4 gave a viscous polymer which, on heating under reduced pressure at 370-385 DEG C. gave a distillate which was separated into a solid dimer, [(CH3)2 Si(CH2)2 CO(CH2)2 Si(CH3)2O]2 and a liquid mixture of higher cyclics which (3), on reaction with hexamethyldisiloxane in the presence of conc. H2SO4 yielded, after purification and distillation, the polymer (CH3)3 SiO.Si(CH3)2 (CH2)2 CO(CH2)2 Si(CH3)2 O Si (CH3)3, and a liquid residue composed of co-polymers of the formula (CH3)3 Si (CH3)2 O[Si (CH3)2(CH2)2 CO (CH2)2 Si(CH3)2O]x Si(CH3)3; (4) Three ketosilanes upon treatment according to example (1) yielded polymers having the units [(CH3)2 Si(CH2) CO(CH2) Si(CH3)2O], wherein n is 3, 4 and 5 respectively; (5) a polysiloxane having the units [(CH3)2 Si(CH2)3 CO(CH2)3 Si(CH3)2O] was copolymerized with a phenylmethylpolysiloxane; (6) a polysiloxane having the unit formula [(CH3)2 Si(CH2)4 CO(CH2)2 Si (CH3)2O] was copolymerized with one containing the unit formula [CH3)2 Si(CH2)5 CO(CH2)5 Si(CH3)2O], monophenylsiloxane, monomethylsiloxane and stearylmethylsiloxane. The products are used as additives for conventional polysiloxanes and as intermediates in making resinous materials.ALSO:Polysiloxanes having units of the general formula <FORM:0716535/IV (b)/1> , where n = 2 to 5, may be made by cleaving the R1 group from silicon in ketones of the formula [R1(CH3)2Si(CH2)n]2CO, where R1 is methyl or phenyl (prepared according to Specification 709,689), by reaction with sulphuric and hydrolysing the resulting sulphate with water.  In examples the preparation of polymers of the above formula in which n is 2, 3, 4 and 5, <FORM:0716535/IV (b)/2> , and <FORM:0716535/IV (b)/3> are given.
Patent GB-360978-A (GB)
Title: Combined mechanically and electro-magnetically operated valve
IPC: F16K31/06
Filed: 1930-08-15
Abstract: 360,978. Electrically-actuated valves. MUSGRAVE, J. L. and CRITTALL & CO., Ltd., R., 43, Bloomsbury Square, London. Aug. 15, 1930, No. 24487. [Class 135.] In a combined mechanically and electromagnetically actuated valve, the valve member B is arranged to be lifted from its seating by a hand-lever on a rotary spindle D provided with forked members d<1> embracing the valve spindle. The valve is maintained open by the action of the solenoid E, e<1>. The members d<1> rest normally, when inactive, on an internal projection a<1> of the casing A and abut against a flange b<1> on the valve spindle for opening.
Patent GB-863426-A (GB)
Title: Improvements in or relating to doctor devices for rotary machines for the treatment of fabrics, and more particularly machines for printing on fabrics
IPC: B41F9/10
Filed: 1959-07-16
Abstract: 863,426. Inking apparatus. GILLET-THAON, ETS GILLET & FILS, ET BLANCHISSERIE, & TEINTURERIE DE THAON REUNIS. July 16, 1959 [July 16, 1958], No. 24516/59. Class 100(2) A doctor device provided in conjunction with the roller of a rotary machine for the treatment of fabrics, particularly an intaglio printing-roller, and wherein the doctor is formed by a continuous strip in contact with the roller along a generatrix thereof, comprises a flexible tube adapted to receive compressed air or any other fluid under pressure and located parallel to the said generatrix between a face of the doctor and an associated rigid element which is parallel to the roller and the position of which is fixed transversely in relation to the roller, the dimensions of the tube being such that the application of pressure thereto causes the tube to be applied on the one hand against the associated element and on the other hand against the doctor. The doctor 2 is mounted in a holder 3 pivotable about a horizontal axis 4 and axially reciprocating. The associated element 7 is a metallic trough provided with a rail 16. Adjacent each end of the trough is an axle 13 carrying a roller 14 and mounted on an arm I1 attached to a plate 10 secured to the machine frame. The rail 16 runs on the outer rings of the bearings 14. The tube 5 presses against the doctor 2 and against the member 7. An arch 17 welded to the member 7 passes over each axle 13, and is normally held out of contact therewith by the tube 5, while retaining the member 7 when the tube 5 is not under pressure. The tube 5 and member 7, thus being allowed limited axial movement, are reciprocated with the doctor to avoid wear.
Patent GB-839100-A (GB)
Title: Improvements relating to linkage for attaching agricultural implements to tractors including depth regulation or control
IPC: A01B63/114
Filed: 1958-07-30
Abstract: 839,100. Tractor power-lifts. CHAMBERLAIN, A. H. July 30, 1958 [Sept. 11, 1957], No. 24538/58. Class 79(1) The hydraulic system controlling and actuating the linkage connecting an implement to a tractor comprises a weight transfer piston and cylinder assembly having a resilient member operatively associated therewith and through which member the implement load and/or weight is transferred by the linkage to the tractor wheels. The system comprises a main control valve C, the spool 23 of which is controlled by a lever 24, poppet valves 8 and 16 also controlled by movement of the lever 24 through a cam 25 and rocker arm 26, a pressure relief valve 17 and pistons A and B connected to a rockshaft 1, to which, through a link 2, the implement is connected. The implement is allowed. to reach its depth with the handle 24 in the position shown in Fig. 1, wherein valves 8 and 16 are open and the valve C permits fluid under pressure from conduit 19 connected to the pump enter conduit 15<SP>1</SP> and conduit 7<SP>1</SP> is open to the fluid reservoir through the conduit 20. Fluid from the pressure relief valve 17 also returns to reservoir via the conduit 21. Thus, there is no pressure on the piston A and a " boost " pressure on piston B determined by the setting of the valve 17. If desired, the implement may descend with the " boost" pressure omitted by appropriate movement of the valve spool 23 to allow free access of fluid from 19 to 20. The "boost" pressure is re-applied before the operational or neutral position is entered at which the spool 23 short circuits the pipes 19 and 20 and both valves 8 and 16 are closed. Rise and fall of the implement is permitted by springs 4 and 12 within the pistons A and B respectively. The stronger spring 12 is under predetermined compression determined by the "boost" pressure. To lift the implement, the lever 24 is moved to the position shown in Fig. 4 wherein fluid pressure acts upon the piston A. The lever 24 may be spring biased to return to or remain in the neutral position. There may be a rearward stop for positioning the linkage in the " lift " position (Fig. 4) and a forward stop indicating that the linkage is in the " lowering " position (Fig. 1), the latter being spring loaded to allow the further movement necessary to release the "boost" pressure. The system is used with implements having depth control devices and is rendered inoperative (by adjusting valve 17 to " no pressure ") for cantilever mounted implements.
Patent GB-1341513-A (GB)
IPC: C08J3/09
Filed: 1972-05-25
Abstract: 1341513 Ceramic slurries INTERNATIONAL BUSINESS MACHINES CORP 25 May 1972 [30 June 1971] 24559/72 Heading C3P [Also in Division B5] A ceramic slurry comprises a mixture of ceramic particles and a thermoplastic organic polymer bender therefor dissolved in an organic solvent system, wherein the solvent system comprises a first fraction in which the binder is highly soluble and a second fraction in which the binder has a very low solubility or is insoluble, wherein the evaporation rate of the first fraction is greater than the evaporation rate of the second fraction, and wherein the ratio in parts by weight of the first fraction to the second fraction is less than the ratio of their evaporation rates. In the example the slurry comprises alumina, polyvinyl butyral, dioctyl phthalate, methanol and methyl isobutyl ketone.
Patent GB-709830-A (GB)
Title: A device for compressing compressible materials
IPC: B65B1/24
Filed: 1951-10-22
Abstract: 709,830. Packaging; baling. SKODA WORKS PLZEN, NATIONAL CORPORATION. Oct. 22, 1951 [Oct. 21,1950], No. 24581/51. Class 94 (1) Apparatus for compressing fibrous &c. material comprises a reciprocating frame having a transverse movable partition wall dividing it into two compartments said transverse wall reciprocating at the same frequency and in the same direction as the frame but at a different speed and with a different length of stroke so that in one end position the volume of one compartment is at a maximum and the volume of the other compartment is at a minimum and vice-versa at the other end position, compartment charging means being provided at the position(s) where the compartments are at a maximum volume and discharging means at the position(s) where the compartments are at a minimum volume. The press includes a frame 3 having end walls 14, 15, lower side walls of half this height and a bottom plate 11 formed with discharge openings 12, 13 at the ends, and a second frame 26 carrying a central vertical partition 4, the side walls of this frame being positioned above the side walls of the frame 3 to form side walls of the press of the same height as the end walls 14, 15. The frame 3 is reciprocated over a plate 10 having a discharge opening 7 by cam operated link means 31 and the upper frame 26 is reciprocated by cam-operated link means 29 at the same frequency and in the same direction but at a lesser speed and with a smaller stroke. Both frames have a period of dwell at the ends of their strokes when material is fed from hoppers 5 or 9 to that compartment defined by the transverse plate 4 and one end wall which is at its maximum volume, material, now compressed between the plate 4 and the other end wall, in the other compartment at its minimum volume is pushed therefrom by a plunger 6. through the opening 7 in the bottom plate 10, into a container positioned therebelow on a conveyer. A slide valve may be provided between the opening 7 and the conveyer. The lateral walls of the press may be curved and the appropriate parts given an arcuate movement. The arrangemay be modified so that the partition wall 4 moves further and faster than the end walls 14. 15 in which case one charging means is provided centrally and two discharging means one at each end. Thus the end walls 14. 15 could be supported by the frame 26 and the partition wall 4 by the frame 3.
Patent GB-468022-A (GB)
Title: An automatic emergency lighting set for use in connection with electric light mains
IPC: F21V23/00
Filed: 1936-09-10
Abstract: 468,022. Supply systems for incandescent lamps. GRIFFITHS, P. A. Sept. 10, 1936, No. 24650. [Class 38 (iv)] [Also in Group XI] Emergency systems.-A portable emergency lighting set, brought into operation automatically on failure of the mains, includes an electromagnetic switch energized from the mains and a battery in an auxiliary lighting circuit which is closed when the switch is deenergized, the battery being charged from the mains through a hand switch independently of the electromagnetic switch. The main supply when alternating may be through a transformer 10 and rectifier 9 and a circuit is then completed through winding 18 of the electromagnetic switch and resistance 20 whereby contacts 34, 35 are closed and contacts 31, 32 opened. Contacts 34, 35 close a circuit through battery 22 and sockets 37, 38 for a signal light or bell. If switch 25 is closed, the battery 22 may then be charged. When the main current fails, contacts 34, 35 open and contacts 31, 37 close so that the signal light fails and the emergency lamps connected to sockets 29, 30 are supplied from the battery 22. One of these lamps may be mounted in a reflector on one side of the casing and the other may be supplied through a flexible lead.
Patent GB-281053-A (GB)
Title: Improvements in gas-fires, gas-radiators and the like
IPC: F24C3/08
Filed: 1926-10-05
Abstract: 281,053. Bromley, H. H., and Sheppard, M., (Representatives of Sheppard, H. L.). Oct. 5, 1926. Atmospheric gas burners.-The tubes 7 of the burners of a gas fire mav be removable by lifting, the lower part of the burners being provided, in the construction shown, with extensions for receiving them. The bentover upper ends of the tubes are adjacent to the heat-retaining cover 16 of the stove, or extend into grooves 19 in it in order to heat the mixture. The burners shown each support a pair of inverted mantles and may be provided with perforated diaphragms 13<x>, Fig. 8, at, or at suitable distances from, the ends of the nozzles 13<11>, and above the point where the nozzles branch from the central part 13<1>.
Patent GB-169696-A (GB)
Title: Improvements in thermal switches for electrically heated apparatus
IPC: H01H37/68
Filed: 1921-09-17
Abstract: 169,696. Aktiebolaget Birka Regulator, (Assignees of Appelberg, A. O., and Gilliver, G.). Sept. 30, 1920, [Convention date]. Thermal switches.-A thermal switch consisting of two contacts and a bimetallic or other operating member is enclosed in a receptacle filled with rarefied or inert gas, and is employed for controlling the supply of current to flat-irons, soldering-irons, cooking apparatus &c. The Specification as open to inspection under Sect. 91 (3) (a) describes a form of switch shown in Fig. 1 (Cancelled). A glass tube 5 has sealed-in wires leading to two contacts 1, 2, one of which is mounted on a resilient plate 4 so that it is kept pressed against the other until deflected by the bending of a bimetallic strip 6 which receives heat from adjacent bodies. In modified constructions separate heating coils mav be provided. A metal enclosure may be used instead of glass. The invention may also be employed as a self interrupting current supply limiter. This subject-matter does not appear in the Specification as accepted.
Patent GB-457946-A (GB)
Title: Improved means for perforating paper sheets and the like simultaneously with the printing thereof
IPC: B41G7/00
Filed: 1935-09-05
Abstract: 457,946. Printing-machines. RIDDER, J. DE, 22, 4th Avenue, and BRILL, W. G., 100, 4th Avenue, Melville, Johannesburg, South Africa. Sept. 5, 1935, No. 24718. [Class 100 (i)] Perforating - apparatus.- In a device for perforating paper sheets simultaneously with the printing thereof, the perforating blade is actuated to change its position as the pressure member of the printing - machine recedes after the printing operation so that the blade is set for the next printing operation. In one form, the blade 1 is pivoted on a rod 2 and is urged towards its inoperative position by a helical spring 5. It is raised to operative position by a lever 6 carrying a roller 7 at one end bearing against a tapered plate 8 on the blade. At its opposite end 17, the lever projects between pins 18 on a disc 15 rotated step by-step by a ratchet-and pawl device 12, 14, so as to oscillate the lever 6. The operative stroke of the device 12, 14 occurs as a plunger 10, which is depressed by the printing-platen and carries the pawl 12, rises under the action of a spring 11. A spring- pressed retaining pawl 14a is provided for the disc 15. In another form, arranged to leave every third printed sheet unperforated, the end 17 of the lever 6 has a pin engaging a cam groove in a disc rotated by the ratchet device. The blade may be carried by parallel links operated by a lever engaged by the pins 18 on the disc 15. Also, wedge devices may be used to raise the blade. The mechanism operating the blade is arranged to give the required sequence of perforated and unperforated sheets.
Patent GB-1426985-A (GB)
Title: Preparation of hard fat product from rapeseed oil
IPC: C11C3/10
Filed: 1974-06-04
Abstract: 1426985 Fat product KARLSHAMNS OLJEFABRIKER AB 4 June 1974 [8 June 1973] 24770/74 Heading C5C A hard fat product with a steep dilatation curve is prepared from a rapeseed oil containing less than 5% erucic acid by hydrogenating the rapeseed oil to a I.V. of 30 to 70 and then cocandomly esterifying 90 to 50 wt. per cent of this hydrogenated oil with 10 to 50 wt. per cent of coconut oil (both percentages based on the total weight of hydrogenated and coconut oils) to obtain a fat product with the following characteristics: dilatation more than 30 mm.<SP>3</SP>/g. at 20 C., but not exceeding 15 mm.<SP>3</SP>/g. at 40 C., a difference of dilatation of at least 30 mm.<SP>3</SP>/g. between the values at 35 and 20 C., and a slip melting point of from 30 to 45 C.
Patent GB-727712-A (GB)
Title: Improvements in tubulous vapour generating and vapour heating units
IPC: F22G7/14
Filed: 1953-09-08
Abstract: 727,712. Steam superheaters. BABCOCK & WILCOX, Ltd. Sept. 8, 1953 [Sept. 9, 1952], No. 24797/53. Class 123 (3). A steam &c. boiler has a gas pass 9 extending laterally from a vertical furnace chamber 16 and locating a secondary superheater 10 and reheater 12,.14, the pass leading to a downpass not shown, in which is disposed the primary superheater. Saturated steam from the steam and water drum 38 flows through tubes 90, header 92 and tubes 80, 82 to the primary superheater from which it passes through the secondary superheater and thence to the point of use. The superheater 10 and reheater 12, 14 each consist of banks of multiple bend U- tubes spaced apart across the pass 9, the banks being pendently supported by headers 18, 20 and 22, 24 respectively, the headers being hung from steelwork 26 by supports 95, 98. The floor of the pass 9 is lined with steam generating tubes which are bent upwardly to form a screen 40 defining the rear end of the pass and is formed with steps 28, 30 and 32. The upright parts 42, 43 and 44 of the lining tubes are disposed in proximity to the rearmost tubes of banks 10, 12 and 14 respectively and are connected thereto by guides 46, 47 and 48 which serve to hold the banks in position whilst allowing for their vertical movement due to expansion. As shown in Fig. 4, each guide consists of a T-headed member 50 welded to the upright part 44 of a floor lining tube and slidably engaging a T-slotted member 54 welded to the rearmost tube length 14<SP>1</SP> of the steam heating bank. The location of the guides downstream of the tube banks protects them from the corrosive effect of the furnace gases.